Smoke unit not working on MTH Steam Engine - fixed!

The first thing to do is verify whether or not the fan is actually blowing. The best way to do that is by holding your cheek next to the stack. The nerves there are some of the most sensitive in your body and you will feel the breeze more easily than just holding your finger over it or whatever. If the fan isn't working, you need to determine whether it's a broken or loose wire, or if the fan motor itself is bad. 

It's possible that you just haven't saturated the wick enough to get the smoke going. 15 drops will dampen the wick, but may not be enough on a dry unit to get the smoke going. If you can feel a breeze from the fan, I'd try adding another 10 drops or so. If that doesn't do it, or if the fan isn't working, you'll probably have to take it apart and diagnose the problem, or take it to a professional. 

I guess I will post my fix, I decided to take the liberty and try to fix this myself. It proved to work out well.

1. I removed the engine shell

2. Removed the smoke unit to inspect the wick, which looked fine so I repacked it back in

3. Checked the fan making sure it spins and was not blocked

4. Checked fan wires made sure end connections were locked up

5. Started it back up and I can now HEAR the fan

This thing smokes like crazy now!

Thank you Southwest Hiawatha, I think either the fan connections were not tight or some cables were actually covering the fan which kept it from blowing out.